This disclosure is directed to prosthetic heart valves and frames for prosthetic heart valves having actuation assemblies with at least two bolts coupled to each other. The actuation assembly with at least two bolts allow different portions of the actuation assembly to be designed to meet different needs. In one example, the actuation mechanism can include a first bolt coupled end-to-end with a second bolt. The second bolt can have a greater diameter and correspondingly greater mechanical strength than the first bolt. The first bolt can have a lesser diameter suitable for minimizing the thickness of surrounding and adjacent valve frame components. The actuation assembly can also include one or more of a nut, a washer, and a portion designed to attach to components of a delivery system. Also disclosed herein are actuation assemblies including a washer secured by a pin extending through the bolt of the actuation assembly.